Hi Dee,
Wow, I hear about this all the time. I work for American Mensa, a high IQ social organization, and one of the best things we do is connect gifted kids with one another and get their parents resources on how to help them. A great place for you to start is to join one of our list serves. Your child doesn't have to be a member of Mensa for you to use them and you get to connect with parents of other bright kids to ask for some advice.
Try visiting www.mensaforkids.org. At the bottom of the homepage, there are a few links...one is "Parent and Teacher Resources." Click on that link and it'll take you to several different articles and other resources that might help ease your mind. There's also information on how to join the Bright Kids list serve, the one I was talking about in the above paragraph.
Gifted kids need a lot of challenges, stimulation and understanding to succeed. So many of the gifted kids we talk to have mentioned that they just didn't fit in with other kids at their school. If you find out that your daughter is gifted, a group like Mensa might be a great spot for her...at least she'd have a peer group of other gifted kids with whom she could relate and you'd have a peer group of parents to swap ideas with.
If you have more questions about Mensa or our gifted children program, just send me an email at ____@____.com. I'd be happy to help in any way I can. I can even help connect you with someone qualified to test your daughter's IQ should you decide to go that route. If you really think she's gifted, it's important to find out for sure so you can place before her the challenges she needs in order to reach her potential. There's no need to be afraid or intimidated by her giftedness.
Take care and best of luck!
Hilary